Privacy maybe
Spent the money and got this and to use it you have to give them access to anything you type or have typed. There is no reason for this need and opens anyone up to identity theft as well as other things. No way Im using this to have flashy keyboards and shame on you Apple for allowing that so kids can download free versions and allow access without understanding. I see potential lawsuit by a parent of some kid or family abused by this some time in the future.
Methos500 about
Glow Keyboard - Customize & Theme Your Keyboards